//----------轮播图start-------------
var t = n = 0, count;

$(document).ready(function () {

    count = $("#banner_list a").length;

    $("#banner_list a:not(:first-child)").hide();

    $("#banner_info").html($("#banner_list a:first-child").find("img").attr('alt'));

    $("#banner_info").click(function () { window.open($("#banner_list a:first-child").attr('href'), "_blank") });

    $("#banner li").click(function () {

        var i = $(this).text() - 1;//获取Li元素内的值，即1，2，3，4

        n = i;

        if (i >= count) return;

        $("#banner_info").unbind().click(function () { window.open($("#banner_list a").eq(i).attr('href'), "_blank") })

        $("#banner_list a").filter(":visible").fadeOut(500).parent().children().eq(i).fadeIn(1000);

        document.getElementById("banner").style.background = "";

        $(this).toggleClass("on");
        
        $(this).siblings().removeAttr("class");

    });

    t = setInterval("showAuto()", 4000);

    $("#banner").hover(function () { clearInterval(t) }, function () { t = setInterval("showAuto()", 4000); });

})

function showAuto() {

    n = n >= (count - 1) ? 0 : ++n;

    $("#banner li").eq(n).trigger('click');

}
//----------轮播图end-------------